public async Task SubscribeWithUncommittedEventsShouldCallHandleOnlyOnce()
{
//Arrange
var mockEventSourcingHandler = new Mock <IEventSourcingHandler <Event> >();
mockEventSourcingHandler.Setup(e => e.Handle(It.IsAny <Event>(),
It.IsAny <long>())).Returns(Task.FromResult(true)).Verifiable();
var moqAggregate = new Mock <IEventSourcing>();
moqAggregate.Setup(a => a.GetUncommittedEvents()).Returns(new List <Event>
{
new SpeechCreatedEvent(It.IsAny <Guid>(), It.IsAny <Title>(),
It.IsAny <UrlValue>(), It.IsAny <Description>(),
It.IsAny <SpeechType>())
});
//Act
var sut = new EventSourcingSubscriber(mockEventSourcingHandler.Object);
await sut.Subscribe(moqAggregate.Object);
//Assert
mockEventSourcingHandler.Verify(m => m.Handle(It.IsAny <Event>(),
It.IsAny <long>()), Times.Once, "Handle must be called only once");
Assert.Equal(0, moqAggregate.Object.Version);
Assert.Single(moqAggregate.Object.GetUncommittedEvents());
}
public async Task SubscribeWithNoUncommittedEventsShouldNotCallHandle()
{
//Arrange
var mockEventSourcingHandler = new Mock <IEventSourcingHandler <Event> >();
mockEventSourcingHandler.Setup(e => e.Handle(It.IsAny <Event>(),
It.IsAny <long>())).Verifiable();
var moqAggregate = new Mock <IEventSourcing>();
//Act
var sut = new EventSourcingSubscriber(mockEventSourcingHandler.Object);
await sut.Subscribe(moqAggregate.Object);
//Assert
mockEventSourcingHandler.Verify(m => m.Handle(It.IsAny <Event>(),
It.IsAny <long>()), Times.Never, "Handle must not be called");
Assert.Equal(0, moqAggregate.Object.Version);
}
